Home / 288,738,591,359.64-398,500,692,115.74-172,999,921,710.83

Finding the Fourth Proportional to 288,738,591,359.64, 398,500,692,115.74 and 172,999,921,710.83

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Solution

The fourth proportional to 288,738,591,359.64, 398,500,692,115.74 and 172,999,921,710.83 is: 238,764,718,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,738,591,359.64 : 398,500,692,115.74 = 172,999,921,710.83 : x
  2. Step 2: Convert to fraction form
    288,738,591,359.64/398,500,692,115.74 = 172,999,921,710.83/x
  3. Step 3: Cross multiply
    288,738,591,359.64x = 398,500,692,115.74 × 172,999,921,710.83
  4. Step 4: Simplify right side
    288,738,591,359.64x = 68,940,588,537,734,584,336,384
  5. Step 5: Solve for x
    x = 68,940,588,537,734,584,336,384/288,738,591,359.64
  6. Step 6: Final answer
    x = 238,764,718,678.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.